216286297 has 8 divisors (see below), whose sum is σ = 222485760. Its totient is φ = 210172560.

The previous prime is 216286261. The next prime is 216286303. The reversal of 216286297 is 792682612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 216286297 - 2¹⁹ = 215762009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216286097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16297 + ... + 26422.

It is an arithmetic number, because the mean of its divisors is an integer number (27810720).

Almost surely, 2^216286297 is an apocalyptic number.

It is an amenable number.

216286297 is a deficient number, since it is larger than the sum of its proper divisors (6199463).

216286297 is an equidigital number, since it uses as much as digits as its factorization.

216286297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42863.

The product of its digits is 145152, while the sum is 43.

The square root of 216286297 is about 14706.6752530951. The cubic root of 216286297 is about 600.2649727800.

The spelling of 216286297 in words is "two hundred sixteen million, two hundred eighty-six thousand, two hundred ninety-seven".